Abstract
In Experiment I, rats showed no evidence of a successive negative contrast effect (NCE) when shifted from immediate reward to a 15-sec delay of reward. Experiment II provided a direct comparison of NCE in both successive and simultaneous paradigms. As in Experiment I, there was no evidence of a successive NCE, but a reliable simultaneous NCE was observed. These results add support for the view that simultaneous and successive NCEs are not due to a single, common process.
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This research was supported by Grant APA 259 from the National Research Council of Canada.
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Mackintosh, N.J., Lord, J. Simultaneous and successive contrast with delay of reward. Animal Learning & Behavior 1, 283–286 (1973). https://doi.org/10.3758/BF03199252
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DOI: https://doi.org/10.3758/BF03199252